( 960)

Black has a valid ko-threat at in the hanezeki, so White might consider filling-in her false eye in there at , before the ko begins. This move does not only steal Black's ko-threat, but simultaneously increases the Punishment Semeai Liberty Level by one, so forcing Black to connect the hanezeki's tail earlier than "usual". However, White's hopes will be in vain; we will reach a situation that is similar to that of FLAG 0c ( 961).
We will take off the board, as a compensation for White's move at .

White filled-in at , and has five liberties (2 * w, 3 * c), as "usual", against eight liberties for Black's group (3 * c, 4 * b, k).

Black lost his ko-threat at , so we can expect that White will need three atari-ko-threats to win, one ko-threat less than with FLAG 0c ( 961).

@

:
Suddenly, Black finds himself below the Punishment Semeai Liberty Level, so he has to connect the hanezeki's tail immediately. Occupying a shared liberty, at , instead, would be a mistake. As a matter of course, this move would decrease the Punishment Semeai Liberty Level again. But his would be of no help for Black, because it just reverts to the Main line of Joachim's Ko-Semeai, with one of his ko-threats lost.

Ko: ;

:
Black threatens the atari of , so White needs atari-ko-threats.

Ko:

:
White needed three atari-ko-threats to win. However, it is very unlikely that she will get more than one in the problem.

Black will win with ease.

///:

White has another option available to get Black's group below the Punishment Semeai Liberty Level: She fills-in her false eye at , instead of starting the ko with a move at .

White filled-in at , and is still on the board. White has five liberties (2 * w, 3 * c), as "usual", against eight liberties for Black's group (3 * c, 3 * b, k, 1 approach-move liberty for the larger eye).
Black lost his ko-threat at , and cannot take the ko first, so we can expect that White will need two atari-ko-threats to win, two ko-threats less than with FLAG 0c ( 961).

@ ; Ko:

:
As before, Black finds himself below the Punishment Semeai Liberty Level, so he has to connect the hanezeki's tail immediately.

:
Black threatens the atari of , so White needs atari-ko-threats.

Ko:

:
Here, White needed only two atari-ko-threats to win. However, it is very unlikely that she will get more than one in the problem.

Black will win with ease.